what two numbers multiply together to equal 16 and add together to equal 15?Advertisement
Tricks for How to Multiply Large Numbers Together Mentally. There are tricks to multiply large numbers mentally that don't require a genius IQ or years of training . The book "Speed Mathematics" says that if you can multiply large numbers mentally faster than your colleagues can retrieve their calculators from their bags, they'll believe you have a superior intellect (even if you don't). After a young boy learned some multiplication tricks, says author Bill Handley, he was treated like a prodigy throughout ...read more
Example 4. .2 × 6.03. Solution. Ignore the decimal points. Simply multiply. 2 × 603 = 1206 . Now we must place the decimal point. Together, .2 and 6.03 have three decimal digits. (Lesson 4, Problem 11....read more
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